Cochylis Treitschke in China: One New Species and Five New Records
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A peer-reviewed open-access journal ZooKeys 258: 85–96 (2013)Cochylis Treitschke in China: one new species and five new records... 85 doi: 10.3897/zookeys.258.4108 RESEARCH articlE www.zookeys.org Launched to accelerate biodiversity research Cochylis Treitschke in China: one new species and five new records (Lepidoptera, Tortricidae, Cochylini) Yinghui Sun1,†, Houhun Li1,‡ 1 College of Life Sciences, Nankai University, Tianjin 300071, P. R. China † urn:lsid:zoobank.org:author:979DE573-D9AF-4238-B329-1E7B188475B7 ‡ urn:lsid:zoobank.org:author:F6AAB0C0-F312-4035-A08B-3DFE03D02F62 Corresponding author: Houhun Li ([email protected]) Academic editor: Erik van Nieukerken | Received 10 October 2012 | Accepted 2 January 2013 | Published 15 January 2013 urn:lsid:zoobank.org:pub:76CBB790-B6AA-405F-B1EC-62A8B65F2293 Citation: Sun Y, Li H (2013) Cochylis Treitschke in China: one new species and five new records (Lepidoptera, Tortricidae, Cochylini). ZooKeys 258: 85–96. doi: 10.3897/zookeys.258.4108 Abstract Six species of Cochylis Treitschke, 1829 are recorded for China. Among them, C. triangula sp. n. is de- scribed as new; C. atricapitana (Stephens, 1852), C. discerta Razowski, 1970, C. dubitana (Hübner, [1799]), C. faustana (Kennel, 1919) and C. posterana hyrcana (Toll, 1948) are recorded for the first time for China. The female of C. discerta Razowski, 1970 is described for the first time. Adults and genitalia are illustrated, a key is given for the identification of Chinese species based on male genitalia. Keywords Lepidoptera, Tortricidae, Cochylini, Cochylis, new species, new record, China Introduction The genus Cochylis Treitschke, 1829 belongs to the tribe Cochylini of the subfam- ily Tortricinae. Cochylis was erected by Treitschke (1829) for the type species Tortrix roseana Haworth, 1811. Brown (2005) listed 68 species and five subspecies. Subse- quently, Brown (2006) described a new species from Argentina; Razowski and Woj- tusiak (2006) described a new species from Venezuela; Razowski and Becker (2007a, Copyright Y. Sun, H. Li. This is an open access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC-BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 86 Yinghui Sun & Houhun Li / ZooKeys 258: 85–96 (2013) b) described a new species from Argentina and Cuba respectively; Metzler and Forbes (2012) described a new species from the USA. Cochylis nana (Haworth, 1811) and C. voxcana (Kearfott, 1907) were transferred to the genus Thyraylia Walsingham, 1897 (Gilligan et al. 2012). Currently, Cochylis consists of 71 species and five subspecies, distributed in the Holarctic, Oriental and Neotropical regions; 26 of these occur in the Palaearctic and Oriental regions. Liu and Li (2002) recorded six Cochylis species from China, of which C. nana (Haworth, 1811) was subsequently transferred to the genus Thyraylia. In this paper, we describe one new species and record five additional species for the Chinese fauna. Material and methods This study is based on the examination of specimens collected by light traps. Morpho- logical terminology follows Razowski (1987). Genitalia were prepared and mounted according to the methods introduced by Li (2002). Photos of the adults were taken with a Nikon D300 digital camera plus macro lens, and illustrations of the genitalia were prepared by using an Olympus C-7070 digital camera attached to an Olympus BX51 microscope. The examined specimens, including the types of the new species, are deposited in the Insect Collection, College of Life Sciences, Nankai University, Tianjin, China (NKUM). Type locality is abbreviated as TL. Taxonomy Cochylis Treitschke, 1829 http://species-id.net/wiki/Cochylis Cochylis Treitschke, 1829: 233. Type species: Tortrix roseana Haworth, 1811. Chochylis Duponchel, 1836: 409. [misspelling of Cochylis] Conchylis Sodoffsky, 1837: 93. [unjustified emendation of Cochylis] Pontoturania Obraztsov, 1943: 97. Type species: Cochylis defessana Mann, 1861. Acornutia Obraztsov, 1944: 68. Type species: Tortrix nana Haworth, 1811. Cochylichroa Obraztsov & Swatschek, 1958: 233. Type species: Eupoecilia atricapitana Stephens, 1852. Brevicornutia Razowski, 1960: 317. Type species: Cochylis pallidana Zeller, 1847. Longicornutia Razowski, 1960: 314. Type species: Tortrix (Cochylis) phaleratana Her- rich-Schäffer, 1851 sensu Razowski, 1960 [=Cochylis epilinana Duponchel, 1842] Neocochylis Razowski, 1960: 316. Type species: Conchylis calavrytana Rebel, 1906. Paracochylis Razowski, 1960: 316. Type species: Cochylis amoenana Kennel, 1899. Diagnostic characters. Cochylis is characterized by the combination of the follow- ing characters: adult small to medium; forewing with all veins separate, Sc reach- Cochylis Treitschke in China: one new species and five new records... 87 ing middle of the costal margin, basal distance between R1−R2 about three times of between R2−R3, R5 to the costal margin; hindwing with costal fold in male, Rs and M1 arising from the same point or long stalked, M3 and CuA1 separate, female hindwing usually with two spines in the frenulum; male genitalia: tegumen short and broad; uncus and gnathos absent; socius separate, drooped, connected with dis- tal part of tegumen at base; median process of the transtilla mostly developed and dentate distally (absent in a few species); sacculus developed with a hook-shaped process basally in some species, with or without terminal process; slender vincu- lum separate ventrally; phallus without cornutus or with cornutus composed of a bundle of spines; female genitalia: sterigma varied in size and sclerotized diversely; antrum developed and heavily sclerotized; ductus bursae short, indistinctly distin- guished from the corpus bursae; corpus bursae membranous, densely suffused with tiny spines. Biology. In the Palaearctic Region, there are one or two generations annually, and over-wintering occurs in the larval stage. Larvae are oligophagous and feed mainly on plants belonging to Asteraceae (Razowski 1987). Distribution. All species are distributed in the Holarctic, Oriental and Neotropi- cal regions. Key to Chinese species of Cochylis based on male genitalia 1 Phallus uniformly slender ...........................................................................2 – Phallus stout basally, slender distally ...........................................................6 2 Phallus with cornutus (Razowski 1970: Taf. 106, Fig. 270) ..C. atricapitana – Phallus without cornutus ............................................................................3 3 Transtilla without median process (Fig. 7)....................................C. discerta – Transtilla with median process ....................................................................4 4 Phallus slightly sinuate (Razowski 1970: Taf. 104, Fig. 260) ........C. roseana – Phallus curved orthogonally distally ............................................................5 5 Sacculus extended to a hook-shaped process basally (Razowski 1970: Taf. 105, Fig. 2681–4) ......................................................................C. hybridella – Sacculus not extended basally (Fig. 8) ....................................... C. dubitana 6 Transtilla without median process (Razowski 1970: Taf. 109, Fig. 283) ........ ............................................................................................ C. psychrasema – Transtilla with median process ....................................................................7 7 Valva with a spine-shaped process at basal 1/3 near outer margin (Fig. 11) ... ....................................................................................... C. triangula sp. n. – Valva without process near out margin ........................................................8 8 Median process nearly triangular (Fig. 10) ................. C. posterana hyrcana – Median process short stripe-shaped, nearly parallel-sided ............................9 9 Socius about 1/2 length of median process (Razowski 1970: Taf. 108, Fig. 279) ..........................................................................................C. defessana – Socius almost same length as median process ............................................11 88 Yinghui Sun & Houhun Li / ZooKeys 258: 85–96 (2013) 11 Valva with outer margin slightly protruded distally, costa straight (Fig. 9) ..... .................................................................................................. C. faustana – Valva with outer margin nearly straight distally, costa slightly concave (Ra- zowski 1970: Taf. 108, Fig. 2771–2) .................................................C. piana Cochylis atricapitana (Stephens, 1852) http://species-id.net/wiki/Cochylis_atricapitana Figs 1, 12 Eupoecilia atricapitana Stephens, 1852: 80. TL: England. Cochylis atricapitana (Stephens, 1852): Razowski, 1960: 317. Material examined. CHINA: Xinjiang Uyghur Autonomous Region: 6 ♀♀, Buer- jin (47°41'N, 86°59'E), 21.vii.2007, leg. Xinpu Wang. Diagnosis. Adult (Fig. 1) with wingspan 10.5−13.0 mm. This species is very simi- lar to C. hybridella (Hübner, [1813]), but C. atricapitana can be distinguished by the pocket formed by the seventh sternum sclerotized on dorsal surface, the antrum com- posed of two connected rectangular plates and not bearing cylinder-shaped structure in the female genitalia (Fig. 12). In C. hybridella, the pocket formed by the seventh sternum is membranous, the antrum is semicircular and bears a